some documentation fixes to make sure the POD shows up in the CPAN web interface (also, this should explain a little bit why there are now *Role classes
adding those stupid backup files with the tilda extension to the ignore patterns
incrementing version number for CPAN release
this test needs to be skipped if JSON is not installed
added warning about missing JSON
added helper parameter to clone method so that cloning doesn't choke and the get/set_meta_object malarky
some workarounds to prevent 'uninitialized' warnings when the triple has no object (i.e. the empty string)